Sash-lock.



A. R. HILL.

SASH LOGK.

APPLICATION FILED MAR.19, 1914.

1,1 19,599. Patented Dec. 1,1914.

` QDFKQO 7 i ALBEET R. HILL, OF ELMIRA, NEW YORK.

&ASH-1.003.

intense.

` Speccation of Letters Patent.

Pettented Dee.. L e

Application filed March 13, 1914. Serial Ne. 825353.

T 0 aZZ u'iom it may concem:

Be it lmownthet i, ALBERT R, HILL, e, citizen of the United States, and residing et Elmira,` in the County of Chemung and State of New York, have inventedcertein new and useful iniprovenients in Sash-Looks of which the following is-e specifioetion.

This invention reiates to certain new and useful improvements in sash looks;

The' primery' object ot the invention is to provide ari-automatic means employed with 4 the ordinary two-sash window and mounted upon the lower sash thereo'or the preventon of the opening of'either of the sashes but allowing u free movement in'closing the same.

pressed eccentricaiiy-niounted cani roller removably positioned upon e window ,sash and automatically engaging the contiguous sash end releasebly for allowing the opening of the window.

- Astili further object is to provide e sash lock that is easy and cheap to manutseture, one in which-there are but few parts, and ali of which re-interchangeable. while et the same time facilitating an automatic looking of the window against opening.

`With these general ohjects in View and others that will appear as thenature of the invention is better understood, the same con- ;sists in the novei comhinetion and arrangement of parts hereinafter fully described, illustrated in the' eccoinpanying drewings, and pointed out in the appendedclaim.

In the drewings forming e part of this application end in which like designeting characters refet to corresponding parte throughout the several vieWs--Figure i is e vertical trunsverse sectionel View taken through the contiguous portions of the two sashes of e window and showing in side eievetion, my improved sash lock operatively positioned in connection therewith, e portion of the same being broken away, Fig. 2 is a front elevation of e portion of the window sashes and illustrnting the invention in end elevation. Fig. 3 is e, top plan view of the lower sash, and the sash lock positioned thcreon, the upper sash being shown in section, and, Fig. 4 is a dctuil perspective view of the three main elements constituting the invention.

Referring more in dctuil to the drawings, it is heroin designed to illustrate my imroved sash lock nounted upon the top rail A further object is to provide :i spring' of the lower sash 10 end-fr'ictioneily engagnge side rail of the upper sash 11 of the ordinary construction ot e two-sash window.

A U-shaped bracket 12 is designed for ready atachnent to the top face of the lower seshby means of a screw 13 projecting through the bottom perforation land enterng the top rail of the' sash and. whereby the bracket is positioned, the channel thereof opening toward (and away from one side rall of the upper sash as heroin illustrated, while as willbe evident, the top of the bracket remains open.

The parallel si'de walls %of the brecket have their corners cut-away edjacent to the upper sash 11 and provided with notches or hlf bearings 15 With which ere removbly journeled the axle 16 positioned eecentri eally through the cvlindricel iocking member 1? which constitutes .an engaging cane. The cam -17is provided with e redially-extending lever 18- heving adownwerdly-extending lug 19 on the bottom there'of for rpositioning the top of a, heiicai spring 20 postoned therearound and having its-bottom seated upon a similariug Qit-cerried'hy 'the base of the bracket 12 edjacent to the perforation 14 thereoi'.

F rom this Construction., it will he evident that with the bracket properly positioned upon the top of the lower sash the cam 17 is journaled for partial rotation therein by seating the projecting ends of the axle 16 within the notche's 15 and with the spring 20 :in its proper position, the expansion oli the letter normally engages the cam surface of the 'cylin'der 17 against the side rail of the upper sash 11. With such en engagement between the two sashes,- it will he readily npperent that any attempt to open the window by either lower-ing the upper sash or elevating the lower sash will result in more firmly wedging the cum 17 in contact with i the upper sash, thus firmiy looking the window closed. A perforation 22 being provided in the free end of the lever 18, e pul! cord 23 is serviceublv Secured ther-ein end adapted upon being pulled to move thelever 18 downwardly and thus rearwardly revolve the cam 17 in the direction denoted by the arrow in Fig. 1, whereby the lock is menually released and the sashes are free to move to an open position.

it is to be noted that the g ist of the invention resides in the provision of the horizontal faces or seats 2& rea'wardly of the notches 15 on& which notches are formen& by a curved continuntion ofeed tacos. 'E he substantinlly in the same horizontal plane as the trunnions 16 and jwhereby any 'opening movement of the sashes more firmly con tects the face of the cam and results in-on ncreasecl wedging of the cam trnnn'ons along the seats 24 and forwardly thereo t and seatecl firmly in the notches 15. On the other hand, a releasing ot the cam rerluces the pressure of the journaled trunnions upon the notches 15 and allows 'a sliding movement of said trunnions toward the upper sash slidingly upon the faces 2%, it being 'evident that in ols-assembling the cam cylindcr'trom the bracket, that the trunnions are slid along the faces 24 completely out ot said notches. Every locking and releasing movement of the cam results in some siight movement of the trunnions upon the faces 24': end varies the contact pressure of the trunnons upon the notches 15 While the increase of pressure incident to the looking operation necessitetes e more firm seeting of the trunniohs in their journaled position&

lt Will be hoted by reference tohig. 1 thetonly onehalt ot, the radii ot the trimnions engage with the circumferentiel Welle ot the beerings, so that to remove the loch in member 17( *from the bese Will only re qure n slight movement tor the purpose. This is ot' peculier advantage inesmuch es it Will requires no removel or disconnecton of an of the ports ot the structure to permit etechment ot the looking member.

The structure is prefernbly tormed by the cylinder 17' from a brass ban' endl t en sccuring by solder or otherwise the lever 18 within a side slot thereof and driving the axle 16 throughen eccentric bore through the cylinder, and While many minor changes may be made in the form,

proportion and details of construction, the

present embodiments thereof are deemed to be the prefernble form of construction.

What l claim as new is:-

A sosh lock comprising e brechet having a base 'provided With n boss and! side walla each formecl at one `end with e hearing having e semi-circuler Wall terminating in faces extending in planes pcrpendicular to each other, the lower face of each well beinglonger than the upper ftce encl clisposccl parellel With the base, e non-resilent cylindrical locking member carrying rigiol ecccn tricelly-disposed` trmnions orrenged to engege the beeringe only by onehal' of their radii; an outstanding lever carried by the looking member end provided With e boss, a spring having its end coils encircling the two loosses, and e ttexible releoeing member connected with the lerer.,

in testimony Whereot t &thx my signature i presence of two witnesses.

Witneeeee:

Hmm HJHnre hmm J. HEHMAN., 

